Values.ItemSourceRepresents item metadata added to an Items dataset using the PutItems API. For more information see Importing items individually.
type nonrec t = {itemId : StringType.t;The ID associated with the item.
*)properties : ItemProperties.t option;A string map of item-specific metadata. Each element in the map consists of a key-value pair. For example, {"numberOfRatings": "12"}. The keys use camel case names that match the fields in the schema for the Items dataset. In the previous example, the numberOfRatings matches the 'NUMBER_OF_RATINGS' field defined in the Items schema. For categorical string data, to include multiple categories for a single item, separate each category with a pipe separator (|). For example, \"Horror|Action\".
*)}